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gdb: no longer define __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS

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My gnulib fix at:
  https://lists.gnu.org/archive/html/bug-gnulib/2015-11/msg00010.html
was merged upstream meanwhile and our gnulib copy now includes it.

As a concidence, Kevin was telling me today that these macros are
causing a build problem on FreeBSD:

common/common-defs.h:47:0: error: "__STDC_CONSTANT_MACROS" redefined [-Werror]
  #define __STDC_CONSTANT_MACROS 1
  /usr/include/sys/cdefs.h:408:0: note: this is the location of the previous definition
  #define __STDC_CONSTANT_MACROS
(and a similar error for __STDC_LIMIT_MACROS)

The problem seems to be that we should be defining these input macros
before including any system header, but, we're not.

So let's just revert e063da6790 ([C++] Define __STDC_CONSTANT_MACROS
/ __STDC_LIMIT_MACROS for stdint.h).  If this causes a problem
somewhere, we can re-define the macros higher up in the file, before
system headers are included.

gdb/ChangeLog:
2016-10-18  Pedro Alves  <palves@redhat.com>

	* common/common-defs.h (__STDC_CONSTANT_MACROS)
	(__STDC_LIMIT_MACROS): Delete.
This commit is contained in:
Pedro Alves 2016-10-18 20:48:37 +01:00
parent 49e4877c54
commit f6abaf7a40
2 changed files with 5 additions and 16 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2016-10-18 Pedro Alves <palves@redhat.com>
* common/common-defs.h (__STDC_CONSTANT_MACROS)
(__STDC_LIMIT_MACROS): Delete.
2016-10-18 Pedro Alves <palves@redhat.com>
* gnulib/update-gnulib.sh (GNULIB_COMMIT_SHA1): Set to

16
gdb/common/common-defs.h
View File

@ -31,23 +31,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
/* From:
https://www.gnu.org/software/gnulib/manual/html_node/stdint_002eh.html
"On some hosts that predate C++11, when using C++ one must define
__STDC_CONSTANT_MACROS to make visible the definitions of constant
macros such as INTMAX_C, and one must define __STDC_LIMIT_MACROS to
make visible the definitions of limit macros such as INTMAX_MAX."
gnulib doesn't fix this for us correctly yet. See:
https://lists.gnu.org/archive/html/bug-gnulib/2015-11/msg00004.html
Meanwhile, explicitly define these ourselves, as C99 intended. */
#define __STDC_CONSTANT_MACROS 1
#define __STDC_LIMIT_MACROS 1
#include <stdint.h>
#include <string.h>
#ifdef HAVE_STRINGS_H
#include <strings.h> /* for strcasecmp and strncasecmp */